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Finding the Fourth Proportional to 69,086.30, 103,629.45 and 22,343.90

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Solution

The fourth proportional to 69,086.30, 103,629.45 and 22,343.90 is: 33,515.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,086.30 : 103,629.45 = 22,343.90 : x
  2. Step 2: Convert to fraction form
    69,086.30/103,629.45 = 22,343.90/x
  3. Step 3: Cross multiply
    69,086.30x = 103,629.45 × 22,343.90
  4. Step 4: Simplify right side
    69,086.30x = 2,315,486,067.86
  5. Step 5: Solve for x
    x = 2,315,486,067.86/69,086.30
  6. Step 6: Final answer
    x = 33,515.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.